Question: An electron collides with an atom in its ground state. The atom then emits a photon of energy (E_{text {photon }}). In this process the

An electron collides with an atom in its ground state. The atom then emits a photon of energy $E_{\text {photon }}$. In this process the change $\Delta E_{\text {elec }}$ in the electron's energy is A. Greater than $E_{\text {photon }}$.

B. Greater than or equal to $E_{\text {photon }}$.

C. Equal to $E_{\text {photon }}$.

D. Less than or equal to $E_{\text {photon }}$.

E. Less than $E_{\text {photon }}$.

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